John,
I visited the GA site and find what you've put online commendable. A
couple of years ago I did something similar, but not quite as refined as
your work. You can find a list of Civil War Units formed in Mississippi,
and their Alternate Designations at the URL
http://www.rootsweb.com/~mstallah/military/csa-unit.html
I don't claim the list to be complete, but it's a beginning. Feel free to
glean what you want if it helps make your huge project a bit smaller.
Looking forward to seeing what you develop and adding a link from the
Yalobusha County home page. Thanks much for the "heads up".
Bill Ward
Yal. CC
Pottsboro, TX